US4845797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor cleaner
Assignee: HOKY (ALSO TRADING AS HOKY CORPORATION) KK
•
Filing: 1987-10-19
•
Granted: 1989-07-11
•
Expires: 2007-10-19
Abstract
Abstract A floor cleaner has driven rollers integrally mounted with a pair of rotating cleaning bodies on respective opposite end portions thereof, each of the rotating cleaning body being provided with a plurality of blades made of an elastic material, and wheels including a pair each of main wheels disposed at forward and rear portions of the casing and auxiliary wheels each of which is located at an intermediate position defined between the respective rotating bodies and main wheels. Each of the auxiliary wheels is positioned somewhat lower than the respective main wheels, i.e. they are collectively arranged in a seesaw-like condition. The main wheels and the auxiliary wheels are journaled to the casing in such a manner that both are swingable toward the front and the rear of the casing. Idle rollers are journaled to the casing between the respective main wheels and the respective driven rollers in a swingable manner. The auxiliary wheels are adapted to freely abut and to be movable away from both the forward and rear driven rollers, respectively, and the respective idle rollers are adapted to freely abut and to be movable away from both the forward or the rear main wheels and the forward or the rear driven rollers, respectively.
Inventors
- 👤 Kiyoshi Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:58
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4072; A47L11/32; A47L11/33; A47L11/4013; A47L11/4036; A47L11/4041; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
426 words
A floor clean comprising: a casing including a front portion, a central portion, a rear portion, and a respective dust box disposed at said front and at said rear portion, each said respective dust box including an opening; a pair of cleaning bodies rotatably mounted to said casing at the central portion thereof, each of said cleaning bodies including a central roll and a plurality of blades comprising elastic material extending from said central roll, each said opening of the dust boxes facing a respective one of said cleaning bodies; driven rollers integral with each of said cleaning bodies and disposed, respectively, at opposite ends thereof; a pair of rotatable front main wheels swingably mounted to said casing, disposed at said front portion thereof and swingable toward and away from the rear portion of said casing, and a pair of rotatable rear main wheels swingably mounted to said casing, disposed at said rear portion thereof and swingable toward and away from the front portion of said casing; rotatable auxiliary wheels swingably mounted to said casing, disposed respectively between one said driven roller integral with one of said cleaning bodies and another said driven roller integral with the other of said driven bodies, and swingable toward the front and rear portions of said casing between a first position in contact with said one driven roller while being out of contact wit said another driven roller and a second position contacting said another driven roller while being out of contact with said one driven roller; the outer circumference of said auxiliary wheels extending beyond a plane that extends outside of said casing and tangentially to the outer circumference of said front and said rear main wheels; and rotatable idle wheels swingably mounted to said casing, respective ones of said idle wheels disposed between said front main wheels and said one of said cleaning bodies, and between said rear main wheels and said other of said cleaning bodies, said idle wheels disposed between said front main wheels and said one of said cleaning bodies abutting said front main wheels and said one of said cleaning bodies when said front main wheels are swung toward the rear portion of said casing as the cleaner is moved in a forward direction, and said idle wheels disposed between said rear main wheels and said another of said cleaning bodies abutting said rear main wheels and said another of said cleaning bodies when said rear main wheels are swung forwardly when the cleaner is moved in a rearward direction opposite said forward direction.
Claim 2
Dependent Claim
426 words
A floor clean comprising: a casing including a front portion, a central portion, a rear portion, and a respective dust box disposed at said front and at said rear portion, each said respective dust box including an opening; a pair of cleaning bodies rotatably mounted to said casing at the central portion thereof, each of said cleaning bodies including a central roll and a plurality of blades comprising elastic material extending from said central roll, each said opening of the dust boxes facing a respective one of said cleaning bodies; driven rollers integral with each of said cleaning bodies and disposed, respectively, at opposite ends thereof; a pair of rotatable front main wheels swingably mounted to said casing, disposed at said front portion thereof and swingable toward and away from the rear portion of said casing, and a pair of rotatable rear main wheels swingably mounted to said casing, disposed at said rear portion thereof and swingable toward and away from the front portion of said casing; rotatable auxiliary wheels swingably mounted to said casing, disposed respectively between one said driven roller integral with one of said cleaning bodies and another said driven roller integral with the other of said driven bodies, and swingable toward the front and rear portions of said casing between a first position in contact with said one driven roller while being out of contact wit said another driven roller and a second position contacting said another driven roller while being out of contact with said one driven roller; the outer circumference of said auxiliary wheels extending beyond a plane that extends outside of said casing and tangentially to the outer circumference of said front and said rear main wheels; and rotatable idle wheels swingably mounted to said casing, respective ones of said idle wheels disposed between said front main wheels and said one of said cleaning bodies, and between said rear main wheels and said other of said cleaning bodies, said idle wheels disposed between said front main wheels and said one of said cleaning bodies abutting said front main wheels and said one of said cleaning bodies when said front main wheels are swung toward the rear portion of said casing as the cleaner is moved in a forward direction, and said idle wheels disposed between said rear main wheels and said another of said cleaning bodies abutting said rear main wheels and said another of said cleaning bodies when said rear main wheels are swung forwardly when the cleaner is moved in a rearward direction opposite said forward direction.
Claim 3
Dependent Claim
425 words
A floor cleaner comprising: a casing including a front portion, a central portion, a rear portion, and a respective dust box disposed at said front and at said rear portion, each said respective dust box including an opening; a pair of cleaning bodies rotatably mounted to said casing at the central portion thereof, each of said cleaning bodies including a central roll and a plurality of blades comprising elastic material extending from said central roll, each said opening of the dust boxes facing a respective one of said cleaning bodies; driven rollers integral with each of said cleaning bodies and disposed, respectively, at opposite ends thereof; a pair of rotatable front main wheels swingably mounted to said casing, disposed at said front portion thereof and swingable toward and away from the rear portion of said casing, and a pair of rotatable rear main wheels swingably mounted to said casing, disposed at said rear portion thereof and swingable toward and away from the front portion of said casing; rotatable auxiliary wheels swingably mounted to said casing, disposed respectively between one said driven roller integral with one of said cleaning bodies and another said driven roller integral with the other of said driven bodies, and swingable toward the front and rear portions of said casing between a first position in contact with said one driven roller while being out of contact with said another driven roller and a second position contacting said another driven roller while being out of contact with said one driven roller; the outer circumference of said auxiliary wheels extending beyond a plane that extends outside of said casing and tangentially to the outer circumference of said front and said rear main wheels, and rotatable idle wheels mounted to said casing, respective ones of said idle wheels disposed between said front main wheels and said one of said cleaning bodies, and between said rear main wheels and said other of said cleaning bodies, said idle wheels disposed between said front main wheels and said one of said cleaning bodies abutting said front main wheels and said one of said cleaning bodies when said front main wheels are swung toward the rear portion of said casing as the cleaner is moved in a forward direction, and said idle wheels disposed between said rear main wheels and said another of said cleaning bodies abutting said rear main wheels and said another of said cleaning bodies when said rear main wheels are swung forwardly when the cleaner is moved in a rearward direction opposite said forward direction.
Claim 4
Dependent Claim
425 words
A floor cleaner comprising: a casing including a front portion, a central portion, a rear portion, and a respective dust box disposed at said front and at said rear portion, each said respective dust box including an opening; a pair of cleaning bodies rotatably mounted to said casing at the central portion thereof, each of said cleaning bodies including a central roll and a plurality of blades comprising elastic material extending from said central roll, each said opening of the dust boxes facing a respective one of said cleaning bodies; driven rollers integral with each of said cleaning bodies and disposed, respectively, at opposite ends thereof; a pair of rotatable front main wheels swingably mounted to said casing, disposed at said front portion thereof and swingable toward and away from the rear portion of said casing, and a pair of rotatable rear main wheels swingably mounted to said casing, disposed at said rear portion thereof and swingable toward and away from the front portion of said casing; rotatable auxiliary wheels swingably mounted to said casing, disposed respectively between one said driven roller integral with one of said cleaning bodies and another said driven roller integral with the other of said driven bodies, and swingable toward the front and rear portions of said casing between a first position in contact with said one driven roller while being out of contact with said another driven roller and a second position contacting said another driven roller while being out of contact with said one driven roller; the outer circumference of said auxiliary wheels extending beyond a plane that extends outside of said casing and tangentially to the outer circumference of said front and said rear main wheels, and rotatable idle wheels mounted to said casing, respective ones of said idle wheels disposed between said front main wheels and said one of said cleaning bodies, and between said rear main wheels and said other of said cleaning bodies, said idle wheels disposed between said front main wheels and said one of said cleaning bodies abutting said front main wheels and said one of said cleaning bodies when said front main wheels are swung toward the rear portion of said casing as the cleaner is moved in a forward direction, and said idle wheels disposed between said rear main wheels and said another of said cleaning bodies abutting said rear main wheels and said another of said cleaning bodies when said rear main wheels are swung forwardly when the cleaner is moved in a rearward direction opposite said forward direction.
Claim 5
Dependent Claim
395 words
A floor cleaner comprising: a casing including a front portion, a central portion, a rear portion, and a respective dust box disposed at said front and at said rear portion, each said respective dust box including an opening; a pair of cleaning bodies rotatably mounted to said casing at the central portion thereof, each of said cleaning bodies including a central roll and a plurality of blades comprising elastic material extending from said central roll, each said opening of the dust boxes facing a respective one of said cleaning bodies; driven rollers integral with each of said cleaning bodies and disposed, respectively, at opposite ends thereof; a pair of rotatable front main wheels swingably mounted to said casing, disposed at said front protion thereof and swingable toward and away from the rear portion of said casing, and a pair of rotatable rear main wheels swingably mounted to said casing, disposed at said front portion thereof and swingable toward and away from the front portion of said casing; rotatable auxiliary wheels swingably mounted to said casing, disposed respectively between one said driven roller integral with one of said cleaning bodies and another said driven roller integral with the other of said driven bodies, and swingable toward the front and rear portions of said casing between a first position in contact with said one driven roller while being out of contact with said another driven roller and a second position contacting said another driven roller while being out of contact with said one driven roller; and rotatable idle wheels swingably mounted to said casing, respective ones of said idle wheels disposed between said front main wheels and said one of said cleaning bodies, and between said rear main wheels and said other of said cleaning bodies, said idle wheels disposed between said front main wheels and said one of said cleaning bodies abutting said front main wheels and said one of said cleaning bodies when said front main wheels are swung toward the rear portion of said casing as the cleaner is moved in a forward direction, and said idle wheels disposed between said rear main wheels and said another of said cleaning bodies abutting said rear main wheels and said another of said cleaning bodies when said rear main wheels are swung forwardly when the cleaner is moved in a rearward direction opposite said forward direction.
Claim 6
Dependent Claim
395 words
A floor cleaner comprising: a casing including a front portion, a central portion, a rear portion, and a respective dust box disposed at said front and at said rear portion, each said respective dust box including an opening; a pair of cleaning bodies rotatably mounted to said casing at the central portion thereof, each of said cleaning bodies including a central roll and a plurality of blades comprising elastic material extending from said central roll, each said opening of the dust boxes facing a respective one of said cleaning bodies; driven rollers integral with each of said cleaning bodies and disposed, respectively, at opposite ends thereof; a pair of rotatable front main wheels swingably mounted to said casing, disposed at said front protion thereof and swingable toward and away from the rear portion of said casing, and a pair of rotatable rear main wheels swingably mounted to said casing, disposed at said front portion thereof and swingable toward and away from the front portion of said casing; rotatable auxiliary wheels swingably mounted to said casing, disposed respectively between one said driven roller integral with one of said cleaning bodies and another said driven roller integral with the other of said driven bodies, and swingable toward the front and rear portions of said casing between a first position in contact with said one driven roller while being out of contact with said another driven roller and a second position contacting said another driven roller while being out of contact with said one driven roller; and rotatable idle wheels swingably mounted to said casing, respective ones of said idle wheels disposed between said front main wheels and said one of said cleaning bodies, and between said rear main wheels and said other of said cleaning bodies, said idle wheels disposed between said front main wheels and said one of said cleaning bodies abutting said front main wheels and said one of said cleaning bodies when said front main wheels are swung toward the rear portion of said casing as the cleaner is moved in a forward direction, and said idle wheels disposed between said rear main wheels and said another of said cleaning bodies abutting said rear main wheels and said another of said cleaning bodies when said rear main wheels are swung forwardly when the cleaner is moved in a rearward direction opposite said forward direction.
References Cited (Backward Citations)
FR1377905A
Cited
US4007508A
Cited
US4325156A
Cited
GB2135869A
Cited
WO1984004663A1
Cited
US4646380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |